Paper-making machine



C. S. BIRD.

PAPER MAKING MACHINE.

APPLICATION FILED JAN. 10, 1919 4 a 1.. Km W 2 1M m w n B a 9 6 M MS I Se i m r d l m w v m M m m P M M v m 1 N m MN Q\ @111. n NNJ mm m .1 Q wk 2 7 2 1 8 00: MN 1 UNITED STATES PATENT OFFICE.

PAPER-MAKING MACHINE.

Specification of Letters Patent.

Patented June 14., 1921.

Application filed January 10, 1919. Serial No. 270,515.

To all whom it may concern:

Be it known that I, CHARLES citizen of the United States, East Wal ole,in the county of Norfolk and State of assachusetts have invented certainnew and useful Improvements in Paper- Making Machines, of which thefollowing is a specification.

his invention pertains to an improved means for cleaning cylinders andfelts of paper-making machines, and relates more specifically to animproved form and mounting of the so-called shower pipes.

e main object of the invention is to provide the pipe with a pluralityof openings through S. Brno, a residing at which water is freed in theform of ets, as such, as contradistinguished from those jets which mergeand in effect produce a continuous stream at the point or line of impactthereof with the surface being cleaned. A further object is to impart anendwise reciprocating movement tb the pipe whereby the jets are causedto traverse or impact the entire surface of the body to be cleaned,which surface travels past the pipe. Such formation and arrangement ofshower pipe while being more effective in operation than thoseheretofore employed in practice, effects a material saving in thequantity of water necessarily employed and a consequent saving in powerused in pumping and forcing the water through the pipes.

everal embodiments of the invention are illustrated in the annexeddrawings, where- 1n, 7

Figure 1 is a side elevation of of a flow box and screen with themounting for the shower pipe and the operating mechanism forreciprocating the same;

Fig. 2 a transverse vertical sectional view;

Fig. 3 a cross section of the of the deflectors tion of the pipe.

Fig. 4 an elevation of the pipe;

Fig. 5 an elevation of a portion of the pipe on an enlarged scale;

Fig. 6 a cross section of the the line VI-Vli of Fig. 5, sh the nozzles;

Fig. 7 a side elevation of a modified form of operating mechanism; and

Fig. 8 a view of a felt with the pipes shown in operative relationthereto.

Referring first to Figs. 1 to 6 inclusive, 1 denotes the flow box orother fixed part a portion pipe and one employed at the end porpipetaken on owing'one of of a paper-making machine and 2 a revoluble screenwhich is to be cleaned by water passing from the shower pipe. Suitablemeans such as a clutch driven element 2, Fig. 2, is employed o rotatethe screen. The pipe is denoted by 3, and is provided with'a series ofjet nozzles 4. The pipe is mounted for endwise reciprocating movement insuitable bearings 5 and 6, and to one end is secured a flexible hose 7though any other means of connection with the supply main (not shown)may be employed.

The opposite end of the pipe is closed by a fitting 8 provided withlaterally projecting pins 9' which extend into the slotted arms 10 of ayoke-shaped member formed as an extension of the upper arm of a bellcrank lever 11. Said lever is fulcrumed on a shaft 12 mounted in fixedbrackets 13 and a link or connecting rod 14 connects the outwardlyextending arm of the bell crank with a lever 15 secured to a rock shaft16 to which motion is imparted from any suitable source.

From this construction it will be seen that an endwise reciprocatingmotion will be imparted to the pipe, the motion being at right angles tothe movement of the screen surace 2.

The pipe 3 adjacent each end thereof will preferably be provided withdeflector plates 17 instead of the nozzles 4, it being found desirableto employ such deflector plates or spreaders at such points as morematerial is usually brought up by the screen at this end, this by reasonof the fact that the screen wire or material adjacent each end overlapsthe head of the screen or supporting member for the wire andconsequently the material cannot be driven through the wire or removedtherefrom at such points as readily as it can be where the wire orscreen is not backed up. It is found in practice that the jets issuingfrom the nozzles if employed at these points tend to form zigzag cuts orlines in the material and it is not removed by such jets as well as itis by the fiat thin stream which is produced by the guards 17.Consequently it is advisable to keep such portions constantly under theaction of water, which action will be effected by the employment of thedeflectors.

The distance between the jet openings in the pipe will be controlled anddetermined in a measure by the amplitude of reciprocatory movementimparted to the shower effects an implngement of pipe. The greater themovement the farther apart the holes or openings may be spaced. Thechange in amplitude may be effected by changing the point of connectionof the rod 14 to lever 15. Such change may also be effected by theemployement of an adjustable throw-crank 18, Fig. 7, driven from acontinuously rotating element of the machine, as 19; otherwise theconstruction is the same as that above set forth.

It is evident that the shower may be employed in conjunction with a feltand such felt is shown in Fig. 8 and designated by 20. Two shower pipesare shown in connection with the felt surface and the other upon theinner surface thereof. The felt 20 passes about rolls as 21 and one ormore of them may be driven by any suitable mechanism, as for instance,gearing 22.

By imparting ment to the shower rection and moving the surface at rightangles to the longitudinal aXJS-Of the pipe, the jets are caused toimpinge a ainst the entire surface of the screen of felt and therebythoroughly cleanse thesame. The use of the straight jet, as above noted,

the water against the surface to be cleaned at a greater force orpressure for the same pump pressure, than would be the case Where thejet is deflected, as is now commonl done. onsequently, a greatercleaning e ectv is produced and this with a smaller volume of water.

The term foraminous or foraminous surface is to be treated in the claimsas equivalent of the screen 2 or the felt 20.

What is claimed is:

1. In a paper-making machine, the combination of a foraminous surface;means for moving the same; a spray pipe provided with a plurality .oforifices located adjacent said surface and adapted to eject a cleansingfluid directly against the same; means for imparting endwise movement tosaid pipe;

endwise reciprocatory movepipe in a horizontal drand means forconstantly supplying water to the pipe.

2. In a paper-making machine, the combination of a foraminous surface;means for moving the same; a spray pipe located adjacent said surface; aseries of unobstructed jet openings formed therein permitting thetherefrom and impinge against the foraminous surface; means forimparting endwise reciprocatory movement to said pipe; and means forconstantly supplying water to the pipe.

3. In a paper-making machine, nation of a foraminous surface;

the combirneans for one acting upon the outer to'be cleaned 'i'otatingthe same;

imparting motion thereto; a horizontally disposed spray pipe arrangedadjacent said surface, said pipe having a series of unobstructedopenings formed therein whereby the jets of water emanating therefrommay directly impingle the foraminous surface; means for constantlysupplying water to the pipe; and adjustable means for imparting endwisereciprocatory movement to said pipe whereby the amplitude of movement ofthe pipe may be varied.

4. In a paper-making machine, the combination of a foraminous surface;means for moving the same; a spray pipe located adjacent said surface,said pipe having a plurality of openings formed therein; deflectorsplaced over said openings adjacent each end of-the pipe which are inline with the end or marginal portions of the foraminoussnrface; andmeans for imparting endwise reciprocatory movement to said pipe. 5. In apaper-making machine, the combination of a; foraminous surface; meansfor moving the same; a perforate spray pipe located adjacent saidsurface adapted to eject a cleansing fluid directly against the same;means for imparting movement to said pipe a-Lriglit anglesito thedirection of movement of the foraminousfsurface'; and means forconstantly supplying water to the pipe.

6. In a paper-making machine, the combination of a foraminous surface;means for moving the same; a spray pipe having a series of nozzlescarried thereby adapted to eject a cleansing fluid-directly against theforaminous surface; means for imparting endwise reciprocatory movementto said pipe; and means for constantly supplying water. to the pipe.

In a paper-making machine, the combination of a screen; means forcontinuousl fixed bearings located ad jacent the periphery of saidscreen; a spray pipe mounted in said bearings and capable ofr'eciprocatory movement therein; a water supply pipe connected to oneend of said spray pipe, the opposite end of the spray pipe being closed;an elbow lever fulcrumed on a fixed portion of the machine adjacent saidclosed end; connections between one arm of the lever and said closed endand connections between the opposite end of the lever and an operativeortion of the machine for imparting a rodiring motion to said elbowlever and a consequent reciprocation of the pipe. 1

In testimony whereof I have signed my name to this specification.

CHARLES 5.3131).

